二氧化钛和氧化铝增强 YSZ 涂层的磨损行为研究

Ali Avcı, M. Karabaş
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引用次数: 0

摘要

本研究采用大气等离子喷涂法在 AISI304 不锈钢上涂覆了三种不同的热障陶瓷粉。研究人员利用针盘式仪器对涂层的磨损特性进行了研究。研究了在 YSZ 涂层中添加 Al2O3 和二氧化钛 (TiO2) 对磨损行为的影响。在进行磨损测试之前,对涂层进行了打磨和抛光处理,以确保涂层的平均表面粗糙度小于 0.8 µm。根据 ASTM G99-04 标准,磨损测试在转速为 143 rpm 的针盘装置上进行。测试在干燥条件下进行,至少进行了 8000 次循环。磨损测试使用了 4N 的负载和直径为 6 毫米的 Al2O3 球。在进行涂层和磨损测试后,使用扫描电子显微镜(SEM)和能量色散 X 射线光谱(EDS)分析了涂层的表面特性和磨损特征。使用光学轮廓仪评估了样品的磨损率。使用微型维氏测试设备评估了材料的显微硬度。研究结果表明,在 YSZ 中加入 Al2O3 可提高耐磨性,但加入 TiO2 则会明显降低耐磨性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Investigation of wear behaviour of TiO2 and Al2O3 reinforced YSZ coating
In this study, three different ceramic powders used as thermal barriers were coated on AISI304 stainless steel by the atmospheric plasma spray method. A pin-on-disc apparatus was utilised to investigate the wear characteristics of the coatings. The effect of wear behavior of the addition of Al2O3 and titanium dioxide (TiO2) into the YSZ coating was investigated. Before the wear test, sanding and polishing processes were carried out to ensure that the average surface roughness of the coatings was less than 0.8 µm. The wear test according to ASTM G99-04, was conducted on a pin-on-disc device at a speed of 143 rpm. The test was performed in a dry condition, with a minimum of 8000 cycles. The wear test utilised a 4N load and 6 mm-diameter Al2O3 balls. The surface properties and wear characteristics of the coatings were analysed using a scanning electron microscope (SEM) and energy-dispersive X-ray spectroscopy (EDS) after conducting coating and wear tests. The wear rate of the samples was assessed using optical profilometry. A micro Vickers test equipment was employed to assess the microhardness of the materials. The findings demonstrated that the inclusion of Al2O3 in YSZ led to an enhancement in wear resistance, but the incorporation of TiO2 resulted in a notable reduction in wear resistance.
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